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An Al x In1−x As/GaAs heterojunction ultra-thin film solar cell with 20% efficiency

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Abstract

An ultra-thin film photovoltaic cell, which incorporates an Al x In1−x As/GaAs heterojunction, is simulated using Adept 1D simulation tool, and it is with an energy conversion efficiency of 20.06% (under 1 sun, AM1.5G illumination) for 604 nm cell thickness (excluding the substrate thickness), and optimized layer thickness and doping concentration for each layer of the device. The device has an n-type AlAs window layer (highly doped), an n-type Al x In1−x As emitter layer and a p-type GaAs base layer. Germanium (Ge) substrate is used for the structure. The device parameters are optimized separately for each layer. Based on these optimizations, the ultra-thin film solar cell design is proposed after careful consideration of lattice mismatch between two adjacent layers of the device.

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Authors and Affiliations

  1. Department of Electrical and Electronic Engineering, Islamic University of Technology Board Bazar, Gazipur, 1704, Bangladesh

    K. A. S. M. Ehteshamul Haque

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  1. K. A. S. M. Ehteshamul Haque
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Correspondence to K. A. S. M. Ehteshamul Haque.

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Haque, K.A.S.M.E. An Al x In1−x As/GaAs heterojunction ultra-thin film solar cell with 20% efficiency. Optoelectron. Lett. 9, 177–180 (2013). https://doi.org/10.1007/s11801-013-2375-1

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  • DOI: https://doi.org/10.1007/s11801-013-2375-1

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